Thionyl chloride + d-phenylalaninol (costs about 300/500 euro on Alibaba) if reacts to violent add cold thionyl chloride or use DMF as solvent (DSMO should also work).
If only using thionyl chloride as reactant and solvent same time it would be perfect -> let the gaseous out in water with baking soda and/or lye.
No side reactions should occur.
This d-phenylalaninol will maintain stereoselectivity because the hydroxyl group is not at the chiral centre.
This d-phenylalaninol chloride is most likely liquid at room temperature, but if it's not it most likely is when you try to boil/vacuum distill the thionyl chloride of.
If you see what chloro-
ephedrine does with the Emde reaction, and platinum with hydrogen (to activate the catalyst) it should de-hydrogenate (the irony) the NH2 group to NH. Because NH is instable you should have methanol and methylamine as solvent present (don't use methylamine on water it is more likely to hydrolyze).
You might want to heat it to 90 degrees with like 5 bar pressure.